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A 400-amp surge for five seconds from a battery this size is what usually catches people off guard, but the real workhorse spec is the 40Ah at the 20-hour rate pulling 2.1 amps down to 10.8 volts — that's where you get consistent runtime for telecom gear or power equiment that can't tolerate voltage sag under sustained load.
What it basically means is you're looking at a deep-cycle AGM with lead-calcium plates, so self-discharge stays under 3% per month at 20°C and you can float-charge it at 13.6 to 13.8V for years without cooking the electrolyte — we've seen these sit in backup cabinets for 8 years or so before capacty drops noticeably.
Cycle life is rated at 500 cycles at 50% depth of discharge, but if you run it shallower — say 20% DOD — you'll easily double that number; just don't push cycle voltage above 14.7V at 25°C or you'll vent the valve prematurely and lose water.
We usually stock the PTD40-12 with T12 lead bolt terminals standard, but if your bus bars need a different stud pattern or you want M6 inserts instead, give us the drawing and we'll adjust the insert molding during the ABS case assembly — the tooling takes about 20 days or so for a custom run.
One thing that's not obvious from the datasheet is the plate thickness — it's roughly 2.2mm per positive plate, which is thicker than most generic 40Ah units, so you get better corrosion resistance in float service and less shedding when you cycle it hard at 40°C ambient.
Not suited for high-rate pulse loads like a starter motor or inverter startup that demands 600A plus — AGM separator will handle 400A bursts fine, but sustained high current above 50A will heat the internal resistnce and shorten cycle life noticeably.
Our standard MOQ is 100 units per model, but we can discuss smaller trial orders if you're just getting started. Just let us know your volume.
For a standard custom order, lead time is usually 20-30 days after sample approval, depending on quantity and customization level. We'll confirm the exact timeline once we have your specs.
Yes, all three certifications — CE, ISO, and SGS — are available for this model. We’ll share copies with your order confirmation or upon request.
For continuous float charging at 25°C, keep it between 13.6V and 13.8V. This ensures the battery stays topped up without overcharging, extending its 5-8 year design life.
Store it in a cool, dry place between -20°C and 50°C. Since it self-discharges only about 3% per month at 20°C, you can leave it up to 6 months before a refresh charge is needed.
Zipping through the ordering process was a breeze, and the delivery timeline was impressively swift. The logistics were handled with remarkable efficiency; the package arrived well within the promised window and was securely packaged, showing no signs of mishandling during transit. Regarding quality, the battery feels robust and well-constructed, with solid terminals and a clean, professional finish that inspires confidence in its durability for demanding applications like telecom backup. The service aspect was equally commendable; the support team was responsive and provided clear communication throughout, making the entire experience smooth and hassle-free. Overall, a very positive transaction from start to finish, highlighting reliable logistics, apparent high quality, and excellent customer service.
Xcellent experience from start to finish. The delivery was incredibly fast, arriving well ahead of the estimated schedule, which was a pleasant surprise. The packaging was robust and secure, ensuring the product arrived in perfect condition without any signs of damage. Regarding quality, the battery feels solid and well-constructed, with a professional finish that inspires confidence. It seems very durable and suitable for its intended applications. Customer service was also top-notch; the support team was responsive and helpful, answering all my preliminary questions promptly and courteously. Overall, a very smooth transaction with no issues whatsoever. Highly satisfactory in terms of logistics, product quality, and the service provided. Would not hesitate to order again based on this positive experience.
Keenly impressed with the overall experience. The delivery was remarkably swift and the packaging was exceptionally secure, ensuring the product arrived in pristine condition. Communication throughout the process was clear and professional, which made the transaction very smooth. The battery itself appears to be of solid construction, with a good weight and finish that suggests quality manufacturing. While I have not yet put it into long-term use, the initial inspection and the company’s responsiveness have left a very positive impression. I would certainly consider this supplier for future needs based on this interaction.
Came across this battery while searching for a reliable power source for my telecom backup system. The delivery was impressively fast and well-handled; the package arrived securely without any delays, which was crucial for my project timeline. The packaging itself was robust, ensuring the product was protected during transit. Upon inspection, the build quality appears solid and meets the specifications mentioned, giving me confidence in its durability for long-term use. Customer service was responsive and helpful when I had a query about the order, providing clear and timely assistance. Overall, a smooth experience from purchase to receipt, with no issues to report so far. I look forward to seeing how it performs in my setup, but based on initial impressions regarding logistics and support, I am quite satisfied.
Shipping was surprisingly swift and efficient. The battery arrived well-packaged and undamaged, which is always a primary concern. The overall quality seems robust and exactly as described for a telecom application. Customer service was responsive during the ordering process, answering my preliminary questions promptly. The product itself appears to be a solid AGM unit, suitable for backup power systems. While I have not yet deployed it in a live environment, the initial inspection and specifications align with my requirements for reliable standby power. The transaction was smooth from start to finish, with clear communication. This level of service and attention to logistics detail makes the procurement process much less stressful. I am optimistic about its long-term performance based on the construction and the reputable specifications listed. Should it perform as expected, it will be a valuable component in our power infrastructure. The vendor handled everything professionally, which instills confidence in the product before it even goes into service. A very satisfactory purchasing experience overall, focusing on the critical aspects of delivery, apparent build quality, and support.
I initially had some concerns about shipping times, but the logistics were handled exceptionally well. The battery arrived ahead of the estimated schedule, which was a very pleasant surprise. The packaging was robust and secure, clearly designed to protect the item during transit. There was no damage whatsoever to the exterior box or the product inside. Regarding quality, the battery feels solid and well-constructed. The terminals are clean and properly fitted, and the overall build inspires confidence for its intended application in backup power systems. The service provided was also commendable. Communication was clear and proactive, with updates provided without needing to ask. Any pre-shipment inquiries were answered promptly and thoroughly. This level of attention to detail in logistics, apparent quality, and customer service makes the overall purchasing experience highly positive and reliable. I would certainly consider this supplier for future needs based on this smooth transaction.
Came across this battery while searching for a reliable power source for my telecom setup. The delivery was surprisingly fast, arriving well before the estimated date. Packaging was robust and secure, with no signs of damage during transit. The battery itself feels solid and well-constructed, with clean terminals and a sturdy casing. Customer service was responsive when I had a query about compatibility, providing clear and helpful information promptly. Overall, a smooth and satisfactory experience from order to delivery.
Perfect experience from start to finish. The packaging was exceptionally secure and arrived ahead of schedule, which was a fantastic surprise. The battery itself feels solid and well-constructed, exactly as described for telecom applications. Customer service was prompt and helpful when I had a pre-sales question. Overall, very satisfied with this purchase.
Great experience overall with this purchase. The shipping was incredibly fast and efficient. My order arrived well ahead of the estimated delivery date, which was a very pleasant surprise. The packaging was exceptionally secure and professional, with no signs of damage whatsoever. Regarding the product itself, the build quality appears to be outstanding. The battery feels solid and well-constructed, with clean terminals and a robust casing. It has a substantial weight to it, which inspires confidence in its durability. The initial performance seems perfectly aligned with the specifications listed. As for customer service, my interactions were minimal but positive. The communication regarding the order status was clear and timely. While I haven’t needed to contact support for any issues, the overall purchasing process was smooth and hassle-free. I appreciate the straightforward transaction and the lack of complications. This seems like a reliable source for a critical component. The combination of prompt logistics and the evident high quality of the item itself makes me feel this was a worthwhile investment. I would certainly consider ordering from this supplier again in the future for similar power needs. The entire experience from browsing to unboxing was handled with clear professionalism.
